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Finding the Fourth Proportional to 3,555.86, 5,333.80 and 1,913.18

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Solution

The fourth proportional to 3,555.86, 5,333.80 and 1,913.18 is: 2,869.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.86 : 5,333.80 = 1,913.18 : x
  2. Step 2: Convert to fraction form
    3,555.86/5,333.80 = 1,913.18/x
  3. Step 3: Cross multiply
    3,555.86x = 5,333.80 × 1,913.18
  4. Step 4: Simplify right side
    3,555.86x = 10,204,519.48
  5. Step 5: Solve for x
    x = 10,204,519.48/3,555.86
  6. Step 6: Final answer
    x = 2,869.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.